@_spi(Internals) import ComposableArchitecture
import XCTest

final class ScopeCacheTests: BaseTCATestCase {
  @available(*, deprecated)
  @MainActor
  func testOptionalScope_UncachedStore() {
    let store = StoreOf<Feature>(initialState: Feature.State(child: Feature.State())) {
    }

    XCTExpectFailure {
      _ =
        store
        .scope(state: { $0 }, action: { $0 })
        .scope(state: \.child, action: \.child.presented)?
        .send(.show)
    } issueMatcher: {
      $0.compactDescription == """
        failed - Scoping from uncached StoreOf<Feature> is not compatible with observation.

        This can happen for one of two reasons:

        • A parent view scopes on a store using transform functions, which has been deprecated, \
        instead of with key paths and case paths. Read the migration guide for 1.5 to update these \
        scopes: \
        https://swiftpackageindex.com/pointfreeco/swift-composable-architecture/main/documentation/composablearchitecture/migratingto1.5

        • A parent feature is using deprecated navigation APIs, such as 'IfLetStore', \
        'SwitchStore', 'ForEachStore', or any navigation view modifiers taking stores instead of \
        bindings. Read the migration guide for 1.7 to update those APIs: \
        https://swiftpackageindex.com/pointfreeco/swift-composable-architecture/main/documentation/composablearchitecture/migratingto1.7
        """
    }
    store.send(.child(.dismiss))
  }

  @MainActor
  func testOptionalScope_CachedStore() {
    #if DEBUG
      let store = StoreOf<Feature>(initialState: Feature.State(child: Feature.State())) {
      }
      store
        .scope(state: \.self, action: \.self)
        .scope(state: \.child, action: \.child.presented)?
        .send(.show)
    #endif
  }

  @MainActor
  func testOptionalScope_StoreIfLet() {
    #if DEBUG
      let store = StoreOf<Feature>(initialState: Feature.State(child: Feature.State())) {
        Feature()
      }
      let cancellable =
        store
        .scope(state: \.child, action: \.child.presented)
        .ifLet { store in
          store.scope(state: \.child, action: \.child.presented)?.send(.show)
        }
      _ = cancellable
    #endif
  }

  @available(*, deprecated)
  @MainActor
  func testOptionalScope_StoreIfLet_UncachedStore() {
    let store = StoreOf<Feature>(initialState: Feature.State(child: Feature.State())) {
    }
    XCTExpectFailure {
      let cancellable =
        store
        .scope(state: { $0 }, action: { $0 })
        .ifLet { store in
          store.scope(state: \.child, action: \.child.presented)?.send(.show)
        }
      _ = cancellable
    } issueMatcher: {
      $0.compactDescription == """
        failed - Scoping from uncached StoreOf<Feature> is not compatible with observation.

        This can happen for one of two reasons:

        • A parent view scopes on a store using transform functions, which has been deprecated, \
        instead of with key paths and case paths. Read the migration guide for 1.5 to update these \
        scopes: \
        https://swiftpackageindex.com/pointfreeco/swift-composable-architecture/main/documentation/composablearchitecture/migratingto1.5

        • A parent feature is using deprecated navigation APIs, such as 'IfLetStore', \
        'SwitchStore', 'ForEachStore', or any navigation view modifiers taking stores instead of \
        bindings. Read the migration guide for 1.7 to update those APIs: \
        https://swiftpackageindex.com/pointfreeco/swift-composable-architecture/main/documentation/composablearchitecture/migratingto1.7
        """
    }
  }

  @MainActor
  func testIdentifiedArrayScope_CachedStore() {
    #if DEBUG
      let store = StoreOf<Feature>(initialState: Feature.State(rows: [Feature.State()])) {
      }

      let rowsStore = Array(
        store
          .scope(state: \.self, action: \.self)
          .scope(state: \.rows, action: \.rows)
      )
      rowsStore[0].send(.show)
    #endif
  }

  @available(*, deprecated)
  @MainActor
  func testIdentifiedArrayScope_UncachedStore() {
    let store = StoreOf<Feature>(initialState: Feature.State(rows: [Feature.State()])) {
      Feature()
    }
    XCTExpectFailure {
      _ = Array(
        store
          .scope(state: { $0 }, action: { $0 })
          .scope(state: \.rows, action: \.rows)
      )
    } issueMatcher: {
      $0.compactDescription == """
        failed - Scoping from uncached StoreOf<Feature> is not compatible with observation.

        This can happen for one of two reasons:

        • A parent view scopes on a store using transform functions, which has been deprecated, \
        instead of with key paths and case paths. Read the migration guide for 1.5 to update these \
        scopes: \
        https://swiftpackageindex.com/pointfreeco/swift-composable-architecture/main/documentation/composablearchitecture/migratingto1.5

        • A parent feature is using deprecated navigation APIs, such as 'IfLetStore', \
        'SwitchStore', 'ForEachStore', or any navigation view modifiers taking stores instead of \
        bindings. Read the migration guide for 1.7 to update those APIs: \
        https://swiftpackageindex.com/pointfreeco/swift-composable-architecture/main/documentation/composablearchitecture/migratingto1.7
        """
    }
  }
}

@Reducer
private struct Feature {
  @ObservableState
  struct State: Identifiable, Equatable {
    let id = UUID()
    @Presents var child: Feature.State?
    var rows: IdentifiedArrayOf<Feature.State> = []
  }
  indirect enum Action {
    case child(PresentationAction<Feature.Action>)
    case dismiss
    case rows(IdentifiedActionOf<Feature>)
    case show
  }
  var body: some ReducerOf<Self> {
    Reduce { state, action in
      switch action {
      case .child(.presented(.dismiss)):
        state.child = nil
        return .none
      case .child:
        return .none
      case .dismiss:
        return .none
      case .rows:
        return .none
      case .show:
        state.child = Feature.State()
        return .none
      }
    }
    .ifLet(\.$child, action: \.child) {
      Feature()
    }
    .forEach(\.rows, action: \.rows) {
      Feature()
    }
  }
}